Julianna Moore does not miss preparing for her role as former Alaska Gov. Sarah Palin .

The Oscar-winning actor famously portrayed Palin in HBOs Game Change (2012) and had rather daunting shoes to fill. Moore was not only following Tina Feys popular imitation on Saturday Night Live in 2008 but was determined to deliver more than a minutes-long caricature.

The actor most recently starred in May December as a not-so-subtle version of Mary Kay Letourneau and even employed her lisp. When asked Monday on Watch What Happens Live if this was more difficult to pull off than portraying Palin, Moore didnt hold back.

The thing that was really, really hard was Sarah Palins voice, she answered on the talk show . That almost killed me. I listened to nothing else for months on end. I took all the music off my phone and just listened to her voice constantly.

The film itself chronicles the quest for a game change candidate who can serve as Sen. John McCains (R-Ariz.) vice presidential running mate in 2008 to win over conservative and independent voters. He notably lost that election to former President Barack Obama .

While Palin revealed herself as a gaffe machine in the process and later became a Fox News pundit and reality TV star , Moore took the role seriously and won a Critics Choice Television Award, Golden Globe, Screen Actors Guild Award and Primetime Emmy.